I see that in 1851 he was a 'Partner in a French Leather Manufactory in France' - perhaps that's where he was in 1861? Still unable to find him
Yes, I saw that, but I think he was in England with the Electrical & Telegraph Company (E&TC). Here are his occupations after 1851;
1856 Superintendant E&TC - living Glasgow (son's Death Cert)
1857 Superintendant E&TC - living Edingburgh (daughter's Birth Cert)
1864 E&TC - living London(?) (son's Marriage Cert)
1868 Officer E&TC - living Kentish Town, Middlesex (wife's Death Cert)
(1870 General Post Office takes over E&TC)
1871 Solicitors Office, General Post Office - living St.Johns - (Census)
1878 Gentleman - living Hansworth, Warwick (his 2nd Marriage Cert)
1881 Superannuated GPO Solictor's Dept - living Folkstone, Kent (Census)
So in the 1861 Census I would presume he would with the E&TC, but where?
If you are having too much trouble trying to find him, don't worry. As you can see, I do have a bit on him and his family, though I do get frustrated with "missing pieces of the jigsaw puzzle".
Les